curl --request GET \
  --url https://api.withflex.com/v1/prices \
  --header 'Authorization: Bearer <token>'

{
  "prices": [
    {
      "price_id": "<string>",
      "description": "<string>",
      "trial_period_days": 123,
      "unit_amount": 123,
      "recurring": {
        "interval": "daily",
        "interval_count": 1,
        "trial_period_days": 1
      },
      "active": true,
      "product": {
        "product_id": "<string>",
        "name": "<string>",
        "description": "<string>",
        "created_at": "<string>",
        "visit_type": "cbtSleep",
        "active": true,
        "upc_code": "<string>",
        "gtin": "<string>",
        "reference_gtin": "<string>",
        "hsa_fsa_eligibility": "not_eligible",
        "test_mode": true,
        "metadata": {}
      },
      "created_at": "<string>",
      "type": "one_time",
      "metadata": {},
      "hsa_fsa_eligibility": "not_eligible",
      "test_mode": true
    }
  ]
}